...###...###... ....#.....#.... ............... .. ........... ... ......... .... #.....# .. #.∩.###...###.. . .....#.X...#..# . . ................. ∆# #. ........zz....... .#... ................. ## #..# #.....#.....#...# ...# #. ##...###...###...# # . #.....#.z...#....... ...# # ............. ...#.# .. .# ................#.. . # .. ........... .....# .## ... . #..... .....#.....#. # #... . ##...###.. ###.#....## . . #.....#.....#.....# # # . ............ . .....# . ...... .........# .# .. ##.#.## ...#. ..# .## #.# ....#.# . ## ## .#.#.## ... ..## .. .#..# ##∩# .## .# # .. .# .# . .# ## . ## ##